This is worth a read if you are concerned about global warming - interesting details on the National Academy of Sciences reports, and claims of Scientific Consensus A few select quotes: “Over the past 400 thousand years – even without human intervention – the level of CO2 in the air, based on the Antarctic ice cores, has already been similar four times, and even higher than the current value. At the end of the last ice age, within a time [interval] of a few hundred years, the average annual temperature changed over the globe several times. In total, it has gone up by almost 10 °C in the northern hemisphere, [and] therefore the changes mentioned above were incomparably more dramatic than the changes reported today.” “While substantial concern has been expressed that [greenhouse gas] emissions may cause significant climate change, measured or reconstructed temperature records indicate that 20th[and] 21st century changes are neither exceptional or persistent, and the historical and geological records show many periods warmer than today. In addition, there is an extensive literature that examines beneficial effects of increased levels of carbon dioxide for both animals and plants.” Since 1998, more than 31,000 American scientists from diverse climate-related disciplines, including more than 9,000 with Ph.D.s, have signed a public petition announcing their belief that …there is no convincing scientific evidence that human release of carbon dioxide, methane, or other greenhouse gases is causing or will, in the foreseeable future, cause catastrophic heating of the Earth’s atmosphere and disruption of the Earth’s climate. Included are atmospheric physicists, botanists, geologists, oceanographers, and meteorologists.
Posted on: Wed, 24 Dec 2014 13:45:47 +0000
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